package org.example.config;

import lombok.AllArgsConstructor;
import org.springframework.cloud.gateway.config.GatewayProperties;
import org.springframework.cloud.gateway.route.RouteLocator;
import org.springframework.cloud.gateway.support.NameUtils;
import org.springframework.context.annotation.Primary;
import org.springframework.stereotype.Component;
import springfox.documentation.swagger.web.SwaggerResource;
import springfox.documentation.swagger.web.SwaggerResourcesProvider;

import java.util.ArrayList;
import java.util.List;


@Component
@Primary
@AllArgsConstructor
public class SwaggerResourceConfig implements SwaggerResourcesProvider {
    final RouteLocator routeLocator;
    final GatewayProperties gatewayProperties;

    @Override
    public List<SwaggerResource> get() {
        List<SwaggerResource> resources = new ArrayList<SwaggerResource>();
        final List<String> routes = new ArrayList<String>();
        routeLocator.getRoutes().subscribe(route->routes.add(route.getId()));
        gatewayProperties.getRoutes().stream().filter(routeDefinition ->
                routes.contains(routeDefinition.getId())).forEach(route->{
                    route.getPredicates().stream().filter(predicateDefinition -> ("Path").equalsIgnoreCase(predicateDefinition.getName()))
                            .forEach(predicateDefinition -> resources.add(swaggerResource(route.getId(),
                                    predicateDefinition.getArgs().get(NameUtils.GENERATED_NAME_PREFIX + "0")
                                            .replace("**", "v2/api-docs"))));
        });

        return resources;
    }

    private SwaggerResource swaggerResource(String name, String location) {
        System.out.println("name:{}"+name+"location:{}"+location);
        SwaggerResource swaggerResource = new SwaggerResource();
        swaggerResource.setName(name);
        swaggerResource.setLocation(location);
        swaggerResource.setSwaggerVersion("2.0");
        return swaggerResource;
    }
}
